The natural ability of sea urchins to absorb CO_2 could be a model for an effective carbon capture and storage (CCS) system. At present most CCS proposals are based around the idea of capturing CO_2 from electricity generating stations or chemical plants and pumping the stripped out gas into underground storage in former oil wells or rock formations. Alternatively, the CO2 can be locked in another substance such as calcium carbonate or magnesium carbonate using an enzyme called carbon anhydrase.
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